Hypertonic Stress Increased Extracellular ATP Levels and the Expression of Stress-Responsive Genes in<i>Arabidopsis thaliana</i>Seedlings
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- KIM Sun-Hee
- Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University
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- YANG Seung Hwan
- Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University
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- KIM Tae-Jong
- Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University
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- HAN Jeong-Sun
- Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University
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- SUH Joo-Won
- Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University
書誌事項
- タイトル別名
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- Hypertonic Stress Increased Extracellular ATP Levels and the Expression of Stress-Responsive Genes in Arabidopsis thaliana Seedlings
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Arabidopsis seedlings increased extracellular ATP (exATP) concentrations transiently in extracellular matrix (ECM) under hypertonic stresses. The increased transcription levels of two apyrase genes, AtAPY1 and AtAPY2, in accordance with exATP accumulation, suggests active regulation of exATP concentration. Arabidopsis seedlings subjected to hypertonic stresses survived after incubation with β,γ-methyleneadenosine-5′-triphosphate, which usually causes cell death through competitive exclusion of ATP. This confirms that the enhanced viability was due to accumulated exATP. The increased concentration of hydrogen peroxide through NADPH oxidase expression suggests the possible importance of exATP in stress response under hypertonic stresses. The mRNA levels of exATP inducible genes (AtMAPK3, AtACS6, and AtERF4) and the reactive oxygen species inducible gene (AtPAL1) were increased by hypertonic stresses. We suggest that exATP accumulation plays a role as a regulatory mechanism in the hypertonic stress response in Arabidopsis seedlings.
収録刊行物
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 73 (6), 1252-1256, 2009
公益社団法人 日本農芸化学会
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詳細情報 詳細情報について
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- CRID
- 1390001206480338560
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- NII論文ID
- 10027541872
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- NII書誌ID
- AA10824164
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- ISSN
- 13476947
- 09168451
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- NDL書誌ID
- 10266937
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可